Abstract: In order to execute several parts programs of a machine tool with one control, the parts programs are fed continuously and set by set to memory areas of a working memory, each area specific to a particular parts program. An interpolating converter interrogates cyclically the currently stored sets and determines from them, step by step, the chords required for the control of the axes of the machine tool. The number of chords per set depends on the respective set. Once all chords of a set are determined, a new set is fed to the working memory.

Abstract: A foundry molding-apparatus and method with at least one sand delivery device in communication with a mold chamber having at least one sand inlet opening and air exit opening, and provided by a mold box, a sand frame, at least one pattern plate carrying the mold box, and at least one mold head which is mounted at the apparatus, axially spaced from the pattern plate, and includes a perforated press plate. With respect to the pattern plate, the sand frame and the sand delivery device are together vertically adjustably movable with respect to the pattern plate and guided by a guide means mounted about the apparatus relative to the central longitudinal axis of the apparatus. The opening of the sand delivery device extends transversely to the longitudinal central axis of the apparatus. The passage leading to the mold chamber extends at an angle to the central longitudinal axis of the apparatus.